Pocket knife



FIG. 1 is a front elevational view of a pocket knife showing my new design, with the blade portion shown in the closed position;

FIG. 2 is a front elevational view of the pocket knife with the blade portion shown in the open position;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a right end elevational view thereof. 

The ornamental design for a pocket knife, as shown. 